A novel time series analysis is presented to locate damage sources in a mechanical system, which is running in various operational environments. The source of damage is located by solely analyzing the acceleration time histories recorded from a structure of interest. First, a data normalization procedure is proposed. This procedure selects a reference signal that is ‘closest’ to a newly obtaine...

In WISA’13, a novel lightweight block cipher named LEA was released. This algorithm has certain useful features for hardware and software implementations, i.e., simple ARX operations, non-S-box architecture, and 32-bit word size. These features are realized in several platforms for practical usage with high performance and low overheads. In this paper, we further improve 128-, 192and 256-bit LE...

An increasing number of cryptographic primitives are built using the ARX operations: addition modulo 2n, bit rotation and XOR. Because of their very fast performance in software, ARX ciphers are becoming increasingly common. However, not a single ARX cipher has yet been proven to be secure against one of the most common attacks in symmetrickey cryptography: differential cryptanalysis. In this p...

Introduced by Rothaus in 1976 as interesting combinatorial objects, bent functions are maximally nonlinear Boolean functions with even numbers of variables whose Hamming distance to the set of all affine functions equals 2n−1 ± 2 n 2 −1. Not only bent functions are applied in cryptography, such as applications in components of S-box, block cipher and stream cipher, but also they have relations ...

برای دستیابی به مزیت رقابتی در شرایط عدم‌­اطمینان که آن تغییر ضروری است، یکی از چالش‌های بزرگ سازمان‌ها کاهش ریسک طریق ایجاد زنجیره‌های تأمین تاب‌آور است. تاب‌آوری زنجیره ‌تأمین توانایی مقابله با اختلال اشاره دارد یک رویداد غیرقابل‌پیش‌بینی بوده و دارای منابع داخلی خارجی مختلفی ازجمله بلایای طبیعی ریسک‌های عملیاتی پژوهش حاضر شبیه‌سازی توسط نرم‌افزار ارنا زنجیره‌ سنگ ساختمانی «کارخانه سنگبری آسم...

Swarm-based metaheuristics have shown significant progress in solving different complex optimization problems, including the parameter identification of linear, as well nonlinear, systems. Nonlinear systems are inherently stiff and difficult to optimize and, thus, require special attention effectively estimate their parameters. This study investigates an input nonlinear autoregressive exogenous...

For simulator fidelity research, insight into pilot control behaviour is an important tool. As pilots use multiple cues for the perception of self-motion, the control behaviour can be described with multi-channel pilot models. For identification of these models in the frequency domain a method using Fourier Coefficients is commonly used. In this paper an identification method using MISO ARX mod...

− In this paper a soft fault diagnosis technique of analog linear circuits is presented. A Simulation-BeforeTest (SBT) approach is used, where the fault dictionary is designed by circuit signatures obtained using ARX model identification.